ABSTRACT IN some of their applications, the current generalised theories of benzene substitution discard steric factors too lightly. For the purpose of _a priori_ consideration, it can be

assumed that the effective reagent in a substitution does not occupy a _smaller_ volume than the group which is eventually installed in place of hydrogen. Access through your institution Buy

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HETEROCYCLES Article Open access 31 May 2024 AN ANALYSIS METHOD INCLUDING ORBITAL OVERLAP DIRECTIONS FOR PREDICTING Π ELECTRON PROPERTIES AND REACTIVITY VECTORS Article Open access 27 March

2025 REFERENCES * "Atomic Radii", _An. Rep. Chem. Soc._, p. 402; 1931. * Bradfield and Jones, _J. Chem. Soc._, 1009; 1928. Download references AUTHOR INFORMATION AUTHORS AND

AFFILIATIONS * University College, University of London, R. J. W. LE FÈVRE Authors * R. J. W. LE FÈVRE View author publications You can also search for this author inPubMed Google Scholar

RIGHTS AND PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE LE FÈVRE, R. Volumes of Alkyl Groups and their Orienting Powers. _Nature_ 131, 655 (1933).

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